1:00 PM webassign.net Verizon O The group taught by the oldest TA has a lower me

Question

1:00 PM webassign.net Verizon O The group taught by the oldest TA has a lower mean quiz score O All groups have the same mean quiz score numerator df denominator df 2.74/10 points Previous Answers MintroStat9 12.E.065 Many studies have suggested that there is a link between exercise and healthy bones. Exercise stresses the bones and this causes them to get stronger. One study examined the effect of jumping on the bone density of growing rats. There were three treatments: a control with no jumping, a low-jump condition (the jump height was 30 centimeters), and a high-jump condition (60 centimeters) After 8 weeks of 10 jumps per day, 5 days per week, the bone density of the rats (expressed in mg/cm) was measured. Here are the data. data31.dat My Notes Ask Your Teach (a) Make a table giving the sample size, mean, and standard deviation for each group of rats. Consider whether or not it is reasonable to pool the variances. (Round your answers for x, s, and s to one decimal place.) Group 10601.10x jump 10 (b) Run the analysis of variance. Report the F statistic with its degrees of freedom and P-value. What do you conclude? (Round your test statistic to two decimal places and your P-value to three decimal places.) 0.002 Conclusion: There is astatistically significant difference between the three treatment means at the = .05 level 7.5/10 points | Previous Answers MintroStat9 12.E.504.XP A survey looked at the value of recreational sports on college campuses. One of the questions asked each student to rate the importance of recreational sports to college satisfaction and success. Responses were on a 10-point scale with 1 indicating total lack of importance and 10 indicating very high importance. The following table summarizes these results My Notes Ask Your Teach Class Mean score Sophomore Junior Senior 729 536 595 438 7.6 7.6 7.5 7.3 (a) To compare the mean scores across classes, what are the degrees of

Explanation / Answer

As per the Chegg policy, we are advised to do one question at a time so i am attempting the 1st image.

In this,

Number of groups = 4

Hence,

Numerator Df = 4 - 1 = 3

Also,

Total number of responses = 729 + 536 + 595 + 438 = 2298

Hence,

Denominator Df = 2298 - 4 = 2294

Therefore,

Numerator Df = 3

Denominator Df = 2294

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.